The Ford Barn

TMarsh · Yesterday, 08:16 AM

I drive my coupe regularly. Sometimes I make short trips to the post office or hardware store. I generally retard the spark when I leave the car for any length of time. What is the general thinking of barners about leaving the advance lever where it is and just restarting if car is still at operating temperature. Just curios, not a big thing to retard spark at ever restart.

P.S. · Yesterday, 08:30 AM

No.

Dino's A · Yesterday, 08:46 AM

Always push that rod up after shutting off the motor. Make sure when you restart, it's still
up. (Yes, I have ocd on that) Your bendix drive will like you!

Y-Blockhead · Yesterday, 08:58 AM

Quote:

Originally Posted by Dino's A

Always push that rod up after shutting off the motor. Make sure when you restart, it's still
up. (Yes, I have ocd on that) Your bendix drive will like you!

Ditto what Dino said.

Dino, Good time on Sunday in Pasadena...

katy · Yesterday, 09:29 AM

Quote:

Originally Posted by TMarsh

car is still at operating temperature

Engine temperature has nothing to do with where the spark control is when starting the engine.

Will N · Yesterday, 09:31 AM

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Spark retard/advance has nothing to do with a cold or hot start. That would be the GAV and choke. You open the GAV some more and pull the choke out briefly for a cold start, but you can leave them alone for a hot restart. When the spark lever is fully retarded the spark occurs at top dead center of the piston compression stroke so that the pressure of the combustion will act on the piston on the downstroke of the power stroke. If you advance the spark when starting the car the spark will occur before the piston reaches the top of the stroke, and the pressure of the combustion will push back on the piston, trying to reverse the rotation of the engine. This can lead to a broken starter bendix right quick, and maybe even bent connecting rods.

Yesterday, 08:16 AM	#1
TMarsh Senior Member Join Date: Jun 2019 Location: N.E. Texas Posts: 154	Restarting after short trips I drive my coupe regularly. Sometimes I make short trips to the post office or hardware store. I generally retard the spark when I leave the car for any length of time. What is the general thinking of barners about leaving the advance lever where it is and just restarting if car is still at operating temperature. Just curios, not a big thing to retard spark at ever restart.

Yesterday, 08:30 AM	#2
P.S. Senior Member Join Date: Jul 2012 Location: Hazzard County Posts: 1,921	Re: Restarting after short trips No. __________________ 2024-2025 MAFCA Technical Director

Yesterday, 08:46 AM	#3
Dino's A Senior Member Join Date: Jun 2016 Location: Arcadia, Ca. Posts: 309	Re: Restarting after short trips Always push that rod up after shutting off the motor. Make sure when you restart, it's still up. (Yes, I have ocd on that) Your bendix drive will like you! __________________ 1928 Roadster Pickup 1930 Tudor 1943 Ford WWII Jeep 1968 Taco Minibike Member, Santa Anita Model A's Arcadia Ca.

Yesterday, 09:31 AM	#6
Will N Senior Member Join Date: Jul 2010 Location: Pennsylvania Posts: 1,251	Re: Restarting after short trips Sponsored Links (Register now to hide all advertisements) Spark retard/advance has nothing to do with a cold or hot start. That would be the GAV and choke. You open the GAV some more and pull the choke out briefly for a cold start, but you can leave them alone for a hot restart. When the spark lever is fully retarded the spark occurs at top dead center of the piston compression stroke so that the pressure of the combustion will act on the piston on the downstroke of the power stroke. If you advance the spark when starting the car the spark will occur before the piston reaches the top of the stroke, and the pressure of the combustion will push back on the piston, trying to reverse the rotation of the engine. This can lead to a broken starter bendix right quick, and maybe even bent connecting rods.